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M25P20 датащи(PDF) 32 Page - STMicroelectronics

номер детали M25P20
подробное описание детали  2 Mbit, Low Voltage, Serial Flash Memory With 40MHz SPI Bus Interface
PDF  50 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M25P20 датащи(HTML) 32 Page - STMicroelectronics

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Instructions
M25P20
32/50
Figure 18.
Release from Deep Power-down and Read Electronic Signature (RES) Instruction
Sequence and Data-Out Sequence
1.
The value of the 8-bit Electronic Signature, for the M25P20, is 11h.
Figure 19.
Release from Deep Power-down (RES) Instruction Sequence
Driving Chip Select (S) High after the 8-bit instruction byte has been received by the device,
but before the whole of the 8-bit Electronic Signature has been transmitted for the first time
(as shown in Figure 19), still ensures that the device is put into Standby Power mode. If the
device was not previously in the Deep Power-down mode, the transition to the Standby
Power mode is immediate. If the device was previously in the Deep Power-down mode,
though, the transition to the Standby Power mode is delayed by tRES1, and Chip Select (S)
must remain High for at least tRES1(max), as specified in Table 18. Once in the Standby
Power mode, the device waits to be selected, so that it can receive, decode and execute
instructions.
C
D
AI04047C
S
Q
23
2
1
3456789 10
28 29 30 31 32 33 34 35
22 21
3210
36 37 38
765432
0
1
High Impedance
Electronic Signature Out
Instruction
3 Dummy Bytes
0
MSB
Stand-by Mode
Deep Power-down Mode
MSB
tRES2
C
D
AI04078B
S
2
1
34567
0
tRES1
Stand-by Mode
Deep Power-down Mode
Q
High Impedance
Instruction



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